“I feel that we should give these people a chance, not bundle them off to special schools and treat them as social lepers.”

Collect pic of Emma Anderson on Norfolk beach 1986.

Mirka said it was a struggle to get Emma accepted into mainstream education.

“I have spent 33 years of my life fighting for the fact these people have potential,” said Mirka.

“I managed to get her into a normal play group, pleading people to give her a chance.

“She managed mainstream education for 16 years.”

Emma, who has sisters Caroline, 41 and Sophie, 27, finished secondary school with a GCSE in Art.

But it was in 2005 when she went to Cambridge Regional College that a member of staff entered some of her artwork for a competition at the Tate Modern in London.

Emma Anderson’s sculptures on display in Emma’s home in RoystonRussell Brand sculpture by Emma Anderson

Emma was one of only two students from the college whose work was selected to be shown at the prestigious gallery.

The mother and daughter have travelled the world together, doing everything from speed boating to camel riding.

Apart from her artwork, Emma has another passion – Aerosmith.

“She’s in love with Steven Tyler,” said Mirka, who has been to see the band in concert with Emma several times.

“I should know all their songs by now.”

Mirka said she made the film – produced by Cambridge-based editor Juan Ballesteros – as part of her “one-woman mission to spread awareness” about the condition.

She said: “It has a strong focus on the fact these people are socially marginalised.

“Spend some time with them and you discover amazing stuff. But in this day and age nobody has time.”

Artist Emma Anderson with one of her paintings.

Earlier this week, the Church of England called for parents with unborn babies tested for Down’s Syndrome to be given “comprehensive, unbiased information” about the condition.

Prenatal tests for Down’s Syndrome have existed for a long time. However, in 2016 ministers announced that a non-invasive prenatal test (NIPT) would be rolled out on the NHS from 2018, offering a lower-risk screening for the condition.

Kate Potter, of the Down’s Syndrome Association, said: “We are concerned that if this test is not delivered appropriately, the number of terminations of babies with Down’s Syndrome might increase.”

Gandalf sculpture by Emma Anderson

Mirka said she didn’t want to “preach” to people with her film, but hoped it would show the positive side of people like Emma.